Boiler-washing system.



W. M. SAXTON L C. C. HODGE.

BOILER WASHING SYSTEM.

APPLICATION FILED TBB.11,1913. 1,089,272, Patented M3113, 1914.

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ATTORNEYS www ummm PLANQGRAPH CD1. WASHINGTnN. n. c.

W. M. SAXTON & C. C. HODGE. BOILER WASHING SYSTEM.

APPLIUATION FILED PEB.11,1913.

1,089,272.. Patented Mar. 3, 1914.

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nam/5555 WILLIAT/I M. SAXTON, OF SPOKANE, WASHING-TON, .AND CHARLES CLINTON I-IODGE, GF WINNIPEG, MANITOBA, CANADA.

BOILER-WASHING SYSTEM.

Losanna.

To all whom t may concern Beit known that \ve,`W1LLIAM M. SAXTON, a citizen of the United States, and a resident of Spokane, in the county of Spokane and State of Washington, and CHARLES C. Honor, a citizen ot the United States, and a resident of lNinnipeg, in the Province of Manitoba and Dominion of Canada, have made certain new and useful Improvements in Boiler-"Washing Systems, ot which the following is a speciieation.

@ur invention relates to improvements in systems for washing out boilers of locomotives and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of our invention is to provide means whereby the boilers of a plurality of locomotives, each under a ditl'erent steam pressure, may be blown oit' simultaneously without one interfering` with the other, and any number may be washed out at the same time.

A further object of our invention is to provide means for decreasing the back pressure in blow-oilA1 pipe, means for delivering water from the wash-out tank and a circulation maintained as hereinafter described.

A further object of our invention is to provide an economical system in which all of the heated water is used, thereby econo mizing in heat, by passing through coils and reiilling tank. The by-pass will be used in blow-oli' line it for any reason it would be necessary to stop flow of water in blowoff from passing through retilling tank.

@ther objects and advantages are apparent in the following specilication and the novel. feature of the system will be particularly pointed out in the appended claims.

Our invention is illustrated in the accompanying drawings forming part of this application in which,

Figure 1 is a sectional view through por tions of the apparatus, certain parts, such as pipes, being shown in side elevation. Fig. 2 is a diagrammatic view of the pipes, showing connections to the boilers of locomotives.

ln carrying out our invention, we provide a tank 1, which is carried by a suitable toundation 2. This tank we will designate the wash-out tank. A similar tank 3 is supported on the piers or foundation 1 and serves for the refilling tank. At 6 we have Specification of Letters Patent.

Application filed February 11, 1913.

Patented Mar. 3, 1914:.

serial No. 747,769.

shown a motor for driving the pumps 7 and 8, respectively.

Referring now to Fig. 2, we have shown at 9 and 10 boilers of locomotives. These boilers are arranged to be connected with the diiierent pipe lines, such as the blow-oft line, the relling line, and the wash-out line in the manner hereinafter explained.

rlhe rest of the apparatus will be best understood by an explanation otl the operation oit' the system.

It will be understood that it is desirable to wash out the boiler of a locomotive when the boiler is heated. Formerly the practice was to let the water cool and to wash out the boilers with cold water, which was injurious tothe boiler, and it was found necessary to pump cold water into the boiler which contains hot water and to allow the water to pass out, thereby gradually cooling` the boiler preliminary to washing it out, but this required considerable time and therefore hot water is used instead. The trouble has been to blow out the boilers of two or more locomotives simultaneously when the steam in these boilers was at diiiierent pressures. lith the systems in present use it is necessary to equalize these pressures before the washing out process can be completed, but with our system two, three, or four, or more boilers may be blown oit simultaneously even when the steam in the boilers is at different pressures, without interfering one with the other in the operation. Let us consider then that the two locomotives 9 and 10, shown in Fig. 2, are to be washed out simultaneously. The locomotive 9 may have its boiler under a pressure of lifty pounds and the locomotive 1() may have one hundred and iii'ty pounds pressure. The boilers of each of the locomotives are connected by means of the ieXible pipes 11 with the blowoil' pipe 12 leading to the blow-off line 13. Between the blow-oliE pipe 12 and line 13 are disposed Ts 14. These Ts are in the nature of injector cones, that is, the ends 13l ot' the pipes are prolonged, as shown by dotted lines. rThe pipes 12 communicate with the outer part of the T at a point at one side of these ends. le will show later how the cold water 'from the wash-out line tends to form a vacuum at the Ts 14. 7e will assume that the steam and hot water passing through pipe 12 passes through the Ts 11i and along the blow-ofrn line in the direction indicated by the arrow. The steam is condensed at Ts la and passes through the coils in refilling tank to wash-out tank where sediment isdeposited and may be drawn off through the pipe 16 into discharge pipe 17 which may communicate with the sewer or other outlet.

The refilling tank 3 is charged by means of cold water from any suitable source which passes through pipe 2O extending downwardly into tank 3 and is provided with float valve 21 which automatically shuts off the water when the tank is nearly full. Also exhaust or live steam from any source may pass into this tank through the pipe 22 and the heating is augmented by the coils of the blow-off line. As the steam is condensed and the water in the tank 3 is heated (if the wash-out process is not going on) this tank will overflow through pipe 25 into the wash-out tank. This provides an additional source of hot water for the washout tank. This wash-out tank is also connected by means of pipe 26 with the pipe 22 through which live steam enters and escapes through the perforated pipe at its end, thus heating the water in the wash-out tank. It may be that the temperature of the water in the wash-out tank will get too high. 7e have provided a vent pipe 27 which leads to the atmosphere by a back pressure valve 29. The lever of the back pressure valve is connected with a lever of valve 80 in pipe 31 which admits cold water from pipe 2O into tank l. Then two or more pounds pressure is developed in the tank l by the heating of the water, the back pressure valve 29 will act and will cause the opening of the valve 30, thereby letting cold water from the pipe 2O into the tank l, thereby reducing the temperature and hence the pressure. The tank l is provided with a float valve 32 which will permit'communication between the overflow pipe 33 and the drain pipe 1T leading to the sewer, when the tank l is filled up to the float 32. The tank l is also provided with a pipe 34 so that it may be filled with cold water from the pipe 2O preliminary to starting the device. The water is shut off by the float valve 35 when the tank is filled. lt will also maintain water at float level as water is used for washing out purposes.

Vhen it is desired to wash out the boiler, the pump 7 is started and the water is drawn from the bottom of the tank and is forced upwardly through the pipe 3G to the washout line 37. The latter is connected, as will be seen by reference to Fig. 27 with the pipes 38 to which suitable connections may be made with the boiler. Thus the hot water in the tank yl may be forced through the boiler, thereby washing out sediment and scale. lWhen now the pump 8 is started7 the water from the refilling tank will pass by means of the pipe 39 to the refilling line 15 and thence it may be conducted by means of pipe l0 into the boilers. The water in the refilling line is considerably above the temperature of the water in the blow-off line due to the passage of live steam into the refilling tank through which the blow-olf line also passes. F or this reason, we have placed a by-pass 4l in blow-o line so that water circulating through blow-off line will not be heated to a greater temperature than can be handled for washing out purposes. Cold water may be supplied to the wash-out tank while hot water is being used for washing out, same passing through circulating pipe 42 and as the water is forced into Ts lst, condensation takes place at these points so that a partial vacuum is produced. This tends to aid the operation of the apparatus and to make it continuous by connecting the circulating pipe to blow-off line at 16. Two or more of the boilers at different pressures may be blown olf simultaneously without interfering at all with the thoroughness and facility of the opera-tion.

he value of a system of this kind may be easily seen. It is not necessary to bring the boilers of the locomotives to the same temperature in order to blow off1 the boilers. rThe boilers may be at once attached to their respective blow-oliG lines and the operation may begin. Owing to the fact that all of the heated water, such as that from the blow-olf line, the overflow water from the refilling line7 etc., is used in the operation7 a great saving of heat and great economy in operation is the result.

Another feature to which we desire to call attention is the fact that owing to the arrangement shown in Fig. l, either tank l or 3 may be used as the wash-out tank or the refilling tank. To this end we have provided the different valves and bypasses which can be easily traced on Fig. l. This is for the convenience of repairs to one or the other of the tanks.

We claim l. In a system for simultaneously washing out a plurality of boilers, the combination of a wash out tank, a blow-off line, connections between said blow-a line and each of said boilers at one end and between said blow-off line and said wash out tank at the other7 a wash out line having connection Vith said wash out tank at one end and with said boilers at the other end, means for forcing water from said wash out tank through said wash out line in-o the boilers, means disposed in said blow-off line for condensing the steam from said boilers prior to its delivery to the wash out tank, a refilling tank surrounding a portion of the blow-off line and arranged to be heated by the passage of fluid through said blow-olf line, and a refilling line connected with said refilling tank at one end and having connections with each of said boilers at the other end of the line, said refilling line being connected with said blow-off line.

2. In a system for simultaneously washing out a plurality of boilers, the combination of a wash out tank, a blow-off line, connections between said blow-off line and each of said boilers at one end and between said blow-oftl line and said wash out tank at the other, a wash out line having connection with said wash out tank: at one end and with said boilers at the other end, means for forcing water from said wash out tank through said wash out line into the boilers, means disposed in said blow-off line for condensing the steam from said boilers prior to its delivery to the wash out tank, a reilling tank surrounding a portion of the blow-off line and arranged to be heated by the passage of fluid through said blow-ofi line, a refilling line connected with said refilling tank at one end and having connections with each of said boilers at the other end of the line, said refilling line being connected with said blow-ofl line, and means for heating said refilling line and said wash out tank.

3. In a system for simultaneously washing out a plurality of boilers, the combination of a wash out tank, a blow-01T line, connections between said blow-oi'i1 line and each of said boilers at one end and between said blow-off line and said wash out tank at the other, a wash out line having connection with said wash out tank at one end and with said boilers at the other end, means for fore ing water from said wash out tank through said wash ont line into the boilers, means disposed in said blow-off line for condensing the steam from said boilers prior to its delivery to the wash out tank, a refilling tank surrounding a portion of the blow-ofi1 line and arranged to be heated by the passage of fluid through said blow-off line, a refilling line connected with said refilling tank at one end and having connections with each of said boilers at the other end of the line, said relling line being connected with said blow-off line, means for heating said refilling line and said wash out tank, said heating means Comprising a live steam line, and a perforated pipe disposed in each of said tanks and being connected with said live steam line.

4. In a system for simultaneously washing out a plurality of boilers, the combination of a wash out tank, a blow-off line, connections between said blow-off' line and each of said boilers at one end and between said blow-off line and said wash out tank at the other, a wash out line having conneotion with said wash out tank at one end and with said boilers at the other end, means for forcing water from said wash out tank through said wash out line into the boilers, means disposed in said blow-oii" line for condensing the steam from said boilers prior to its delivery to the wash out tank, a refilling tank surrounding a portion of the blow-oil'.l line and arranged to be heated by the passage of fluid through said blow-01T line, a refilling line connected with said refilling tank at one end and having connections with each of said boilers at the other end of the line, said refilling line being connected with said blow-off line, means for heating said refilling line and said wash out tank, said heating means comprising a live steam line, a perforated pipe disposed in each of said tanks and being connected with said live steam line, a circulating line for connecting the wash out tank with the blow-ofil line and the refilling line, and means for forcing water from said wash out tank through said circulating line into said blow-oflI line.

In a system for simultaneously washing out a plurality of boilers, the combina tion of a wash out tank, a blow-off line, connections between said blow-off line and eaeh of' said boilers at one end and between said blow-olf line and said wash outl tank at the other, a wash out line having connection with said wash out tank at one end and with said boilers at the other end, means for forcing 'water from said wash out tank through said wash out line into the boilers, means disposed in said blow-oftl line for condensing the steam from said boilers prior to its delivery to the wash out tank, a relling tank surrounding a portion of the blowoif line and arranged to be heated by the passage of fiuid through said blow-off line, a refilling line connected with said refilling tank at one end and having connections with each of said boilers at the other end of the line, said refilling line being connected with said blow-offl line, a by-pass in said blow-ofi' line around the portion of the blow-off line within the receiving tank, and means for controlling said by-pass.

WILLIAM M. SAXTON.

CHARLES CLINTON I-IODGE.

I/Vitnesses as to Villiam M. Saxton:

MARION LLOYD,

EVA SMITH. Witnesses as to C. C. I-Iodge:

E. S. IIoTcI-Imss,

I-I. E. ANDERSON.

Copies o2 this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

